Ubuntu Linux : How to combine multiple PDF file

Here’s how to combine multiple PDF file on Ubuntu.

First install ghostscript and pdftk from Ubuntu repository :

apt-get install gs pdftk

Then, using ghostscript, combile all the pdf files you desired into one file, using this command

[code]
s -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=combined_file.pdf -dBATCH file1.pdf file2.pdf file3.pdf
[/code]

The command will produced the combined pdf output on “combine_file.pdf”

Contribute to Ubuntu by becoming MOTU!

Ubuntu MOTU (Masters Of the Universe) is a continous effort to contribute by adding, maintaining and supporting software packages in Ubuntu Universe repository.

Generally to become a MOTU, you would have to work with software developers helping them in making their software available in Ubuntu Universe repository, knowledge of how to build *.deb packages is required at this stage.

One can apply to become a MOTU once he/she has made a significant amount of contribution to distro and forwarded his/her application to the MOTU council.

Advantages of Becoming a MOTU
MOTU has the advantage of joining the Ubuntu core developers group, which in turn can play a leading role in introducing and developing new features for Ubuntu operating system.

Interested in becoming a MOTU? Join the MOTU class in #ubuntu-classroom in irc.freenode.net. The Packaging 101 classroom would be held on 13 December 16.00 – 17.30 (UTC time).

Reference: Ubuntu MOTU website

How to recover corrupted gzip files in Linux

Ever come accross corrupted gzip or tarball which couldn’t be uncompressed? No worries, The gzip Recovery Toolkit make it possible for you to recover those files.

Here’s how to recover gzip (or tarball .tar.gz) file in Linux operating system :

  1. First download and compile gzrt
  2. run gzrecover on corrupted gzip — “gzrecover corrupted.tar.gz”
  3. extract the recovered file using cpio — “cpio -F corrupted.tar.recovered -i -v”

Note that however that not all file/data are recoverable using this method. Alternatively, you can use bzip2recover for recovering bzip2 compressed file.

Download Ubuntu Gutsy Gibbon DVD Repository

It is a well known fact that Ubuntu Linux distribution has a comprehensive application collection from its repositories which can be installed at anytime provided the users have a relatively fast internet connection.

However there are still places in the world which do not have access to such connection which may prevent users from installing new applications on their Ubuntu operating system. Luckily somebody took the time to put Ubuntu Gutsy software repository into a collection of DVDs which may be handy if you are going to introduce Ubuntu to your friends which does not have an internet connection at his home.

The repository DVDs are available for i386 and 64bit platform and are divided to 5 DVDs. The DVD images (size up to 4.0GB) are downloadable for free from ftp://tuma.ui.edu/pub/ubuntu-repository/gutsy/.

Please refer to the Jigdo tutorial from Debian website on how to download the DVD using Jigdo.

Instructions on how to add the DVD repository to your Ubuntu operating system is detailed here : Add CD/DVD apt Repository.

An Indonesian version of the instruction is also available from : http://wiki.ubuntu-id.org/DistribusiDvdReposUbuntu